This paper provides a semantics for the adjective single. It manifests a curious pattern of interpretations that may shed light on exhaustivity effects, quantification, and how adjectives get nonlocal readings. In particular, this paper treats single on its most salient reading as, like occasional, a nonlocal adjective in the sense of Schwarz (2006, 2020) and others, receiving sentential scope. Its core lexical semantics includes an exhaustivity component that generates an 'exactly' interpretation in general and an 'even'-like one in downward entailing contexts. Additionally, single has a distinct meaning that is part of the same paradigm as double and triple, with its own distribution. While we assign this meaning a separate denotation, it similarly structures the sub-atomic domain relative to a given context.